A finger sensing device may include an integrated circuit substrate and an array of pixels on the IC substrate. In the regions of the mouth, the throat and the airways they produce a refreshing and clearing feeling. Further, an ink remaining amount check function of an ink jet printer is performed with priority over other processes by a timer interrupt operation. Subsequently, each transceiver receives laser energy as it is backscattered from the air. The peripheral block may be implemented with low-Vt FET devices for high-speed operation. The triggering system can produce a medium creating an ambience for the initiation of propellant pellet-projectiles.